Nord-Lock Washers, Delta Protekt®
The NordLock® bolt securing system uses geometry to safely lock bolted joints in the most critical applications. This unique wedge-locking system offers the following advantages:
- Maximum safety
- Resists loosening caused by vibration and dynamic loads
- Ease of assembly and disassembly
- Locking function is not affected by lubrication
- Positive locking at low and high preload levels
- Controllable preload
- Same temperature characteristics as standard bolt/nut
- Reusable
The key is the difference in angles. Since the cam angle " a " is larger than the thread pitch " ß ", the pair of washers expand more than the corresponding pitch of the thread. NordLock® washers positively lock the fastener in a joint which is subjected to extreme vibration or dynamic loads.
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